Blank-feeding device.



P. L. RBERTSON. BLANK FEBDING DEVICE. APPLICATION FILED JUNE 2. 1911.

PBJGHG Feb 4, i913.

4 SHEETS-SHEET 1.

1 l I l P. L. ROBERTSON.

BLANK PBEDING DEVICE. APPLICATION FILED JUNBz. 1911.

.Patented Feb. 4, 1913.

4 SHEETS-SHEET 2.

P. L. ROBERTSON. BLANK PBEDING DEVICE.

APPLIGATION FILED JUNE 2, 1911. 1,052092. Patented Feb. 4, 1913.

4 SHEETS-SHEET 3y P. L. ROBERTSON. BLANK FEEDING DEVICE. APPLICATION FILED JUNBZ, 1911.

Patented Feb. 4, 1913.

4 SHEETS-SHEET 4.

HTEFILJQOBERTo/k UN TE PETER L. non'nn'rsoN, OFMILTON, NEAR HAMILTON, ONTARIO, CANADA.

. nLANK-FEEDING 'ionvgicn4 i Specification of 'Letters Patent.

Patented rei). 4,1913.

Original application filed December 27, 1910, Serial No. 599,548. Dividedandthis application led .Tune 2, i

To all whomr'i may concern Be it known that I, Pnrnn LrniBUnNn'a ROBERTSON, of Milton, near I-Iainilton, 1n the Province of Ontario, Canada, have invented certa-in new and useful Improvements in Blank-Feeding Devices; and I do hereby declare that-the following is a fiill, clear, and exact description of the same.

The invention forming the subject-matter of this application, which is a divisional part of application Serial No. 599,548, filed Dee. 27, 1910, is especially adapted for use in feeding screw blanks'to screw forming mechanism, and it` has for an object to pi'ovide a blank feeding means which will be simple in construction and which will also be morepositive in action than those heretofore known.

Other objects and the advantages of the linvention will be apparent to those skilled in 'the art from a consideration of the following description and accompanying drawings forming a part of this specification in which one embodiment of the invention has been described and illustrated and in which similar reference characters indicate the. same parts throughout the various views and wherein- Figure 1 is a front-elevation of my improved blank feeding nieans showing it aplied to a screw machine, portions of the latter being shown; Fig. 2 is a perspective view of one of the main members of the dcvice; Fig. 3 is a vertical sectional view taken on line 3 3 Fig. 1` the parts being in the position shown in Fig. 5; F 4 is a detail face view of parts of the operating vmechanism for the oscillatory feed arm; Fig. 5 is a plan view of the device; Fig. (i is :a vertical sectional view taken on line G-G Fig. 5; Fig. T is a detail view showing the i mounting of the oscillatory feed arm; Fig. i S is a detail inverted plan view of a portion of the oscillatory feed arm operating means; Fig. 9 is a detail side elevation of the hopper and the hoist operating means; Fig. 10 is a vertical sectional .view takenv on line 10--10 Fig. 7 Fig. 11 is a detail sectional viewA of a portion of the hoist operating meaiis'g'Fig. 12 is a detail perspective view illustrating particularly the relation of the oscillatory arm to the notched disk when in position receiving a blank from the latter.

In the drawings the bed plate of the screw machine to which my invention is Serial No. 630,890.

shown applied is indicated at 1 and may be supported on suitable legs, not shown. The pointing tool indicated at 3, the threading tool 4, back rest 5, the pick out device 8 for taking the finished screw from the chuck, G, and the trip device 9 for releasing the screw from the pick out device,

which parts comprise portions of the screw machine, form no part of the present invention having been fully disclosed and claimed in the application above referredto, whilev the chuck 6, the jaws whereof are indicated at 7, has been made the subjectmatter of a separate divisional application tiled by me June 2, 1911 under Serial No. 680,889.'

My improved blank feeding device comprises two main parts or members lone of which is adapted to receive the blanks, indicated at w, from a suitable device as the inclined chute 14; formed by a pair Aof vertically arranged parallelstrips on the tops of which the heads of the blanks rest with their slianks or bodies hanging down therebetween, the blanks being delivered to the upper end of the chute by suitable means, to which further reference will be presently niade, from a suitable hopper 15, mounted upon a standard 16 on the bed plate 1. The other main part or member is adapted to receive the blanks from the first member and "deliver them to the vchuck 6. The first of these parts consists, briefly speaking, of a rotatably mounted member adapted to receive the blank and operated by suitable means to cause it to advance the blank to ^the desired point.A In the present embodiment of my invention this part of the feeding' mechanism is formed as follows: A horizontal disk 29 is located' adjacent to the lower end of the chute and has its periphery formed with notches or recesses 30 to receive the blanks which are delivered thereto in vertical position. rI`his disk is rigidiy secured on the upper end of a vertical spindle 31 rotatable iii a bearing bracket 31 on the upper Aface of which the disk rests freely, vthe bracket being secured upon apart of the standard 16. The disk 29 is intermittently rotated by ineaiisof a ratchet wheel 32 rigid on the lower end of the spindle 31 and which is operated by a pawl 33 pivoted to a link 34 having legs 35 which inclose the ratchet wheel and are pivoted thereto at one end. The opposite end of the link 34C is conneeled ino a second link 36 "which receives motion from a lever 32" te one end ef which it is eonneetedh such lever being iilcrurneel between its ends :is at 38 to e. sniizrlole part of the standard 16 and being' operatel by cani 39 engaging n roller fl() en the opposite end thereof, the cem 39 being mouneel on a, shaft 30 enpporefl and operated in suitable nmnn i', not shown. The blanks :1re retained in the noches 8G, while ihey nre being advanced by the rotation of "ehe disk. by ine-.ins of n substantially semi-eir-4 i-lyn inw -lo ille elnick ll. ln lhis embodiment of my invention this second part of he feeding mechanism comprises an oseillniory ir-In 50 which oseillnles Jfrom n snlislnnlinlly liori zonliil pofsilinn, shown in Figs. 3 unil. l in which ilV receives thev blank fromA the e sk 2S), lo n substantially verlicnl shown in Figs. l :ind 7, in which killer posil'ien l'he lxlnnk is in position to be engaged oy the jaws of ille Chuck. ril'he arm is provided on ils miler or 'free end with n Spring' hill 5l which. when ihe .firm is in the position shown in Fig. 5, is underneath the reeeened porlion of the disk 29 and into ivliieh llie rntnlion of the disk forces the lilnnk. l'lie :mn beingA nseillziied by n shorl horizonlnl roeker slni'ft 535i freely snpporl'ed in :i Sleeve 5l- Jformell integrally with llie standard (3. the shaft having rigidly Secured lo one end thereof :i block 55 in which lhe inner end of the nrzn 50 ie revolnbly inonnlerl. This,l slnifl is opernled crank iin 57 prnjeel'ing from-e, disk 58 on the end nl lhe simil' :ind carrying n relier 58 engng ing n .filol :'39 in i dink (30. This disk has n verlienl boring' in which is rigidly secured n rnd G' lhe ende whelceo'll project lhrough lhe wille nf n `Cylindricall hnnsing 62 which inf'lnses l'he disks :'58 nml (S0 and is secured hy :1 nel, screw (33 on ille reduced enel 6l of the sleeve 54; rlhe rod 6l is reciproenfed io nseillnl'e llie disk 8 (lirongh the medium of disk (EO :ind pin 5"() respectively hy n single lln'ow mun (34. on Shaft 390- zinfl n relrnclile helical Springr 6l seenred nl one end lo ille lop of lim rod :1nd nl iis other end lo 4(he lower purl of he housing; 62.. the spring moving che :mn 50 lovvnrfl lhe chuck und llie clim relnrning' il.

ln order lie ennee 'the blank le cleliv residen.

'hy means of e. sprocket chain 8? ered to the gripping devies, with its heeel in advance ei the arm 50 se as le lne readily engaged lay lie gripper J[he erin is also ree tele on ils ovm axis snbstenl'ifilly n heli turn in opposie directions :is it swings from one nesilion 'ro the olier. This l eoniplish by ineens of n small bevel geur or ginie-n 66 rigid on erin 50 sind engreg'ing a larger segmental bevel gear GT secured. by n set screw G8 on the reduced end Gil opp-:r site to end nl) ci the sleeve As will. he seen by referring 'periienlarly lo Figs. l and llie pinion @(5 rlengnges 'from lle segrm'enlal leer il? hefere the mn 5() has reached. lhe limiiA of iQs rfloivnwnrffi swing' while *ie-he gear and pinion are rele.- 'ively so arranged ne i0 Cause lihe erin lo hay made Jehe required half lnrn when The gears disengnge. The purpose. nl? ellis con struction is lo ohvine any chance of ehe head of he blank srikiifig one el? ihe jews 7 nf the chuck 6. n culi army pcj-rion 56' on the pinion sliding; en a ent army perlion nf the gear il?, the arm being liini'ed in rr inovenieni by n rib 67'" en the e The menne which ll. empley lin deliver 'he hlnnks. from hnper le the @linie conngirieee a Sinti enel in order te olivinle any chance nil? :lernz'i e le the machine through llie linie might he calmed-ny the blanke in l i per elielrncling 'he nioreniens ihei'enf) fl here devised n mechanism iler @perl 'ing' the hoist which provides :i yie ding or elle plaeeable connection bel-Ween the hnisl'l and lne. initial drivingvgenr. As liereelinrrn the hoist is vertically reeiproee'leel ley ineens; of a connectingw roel Z6 pivoeel lhere'xc nl its upper end ane?. receiving; motion from crank disk 77 le which its lower end is eennected. This disk 7V( is rigidly monili-ed en n. sinh slnit 78 suppoi'lted'in heerings 'T9 on the base lli of the. Standard 155. eeeill 'ill

lill@ ond disk S0 is also rigidly inounerl allie sinh shaft 78 :1nd is operatively engngeil 41"' and rotated ov a sproeket Wheel 8l vby or a loch; 82 elidahle in e loorinn 8E in dink S0 Jhe lbeveled end 83 of which prnjeeie slightly into a boring in 'lhe sprnekel; wheel 8l, n spring 8:3 normally holding' 'lle boli; in such pesil'ion9 coller en h-e bolt limiting he inward inoveinenl. lin will readily he Seen 'hnl in the event of the heini: slicking lhe spring will yield and ellen' the beveled end cf the bolt lo dsenfm e frein f lhe borinff. The sprocket Wheel 8l` driven i oep-eil thereover and over e second eprnekei: Wheel 88 on'lhe .shaft 39e, and is freely mener-eel on ehnfrl'. l

ln 'the operalon ef my improved kleed device, the blanks are faire?, placed in the hopper end are lii'led to lille einziehosl 2"!" @he blanks -ee i' .lll

elotled. enel or lne ll. lll

known manner). 'Ihe blanks travel down the chute 14 by gravity and as each blank reaches the bottom of the chute it enters one of the notches in the disk 29 and is car- 50, the straps Il and 42 retaining the blank in proper position in the notches 3 0 during the rotation of the disk. The arm is then operated (through shaft 53, gears 66, and .67, etc.) to sivingit to a'vertical position with the blank having its head facing toward the chuck and being in position to be engaged by the jaws of the latter, the

. arm 50 swinging back to horizontal position after the chuck has seized the blank.

I. claim:

l. The combination With mechanism for acting upon a blank, of blank feeding means including a rotary member adapted to receive and advance a blank, means retaining such blank while being advanced by the rotary member with its end projecting from such rotary member parallel to the axis thereof, an oscillatory arm provided With a blank gripping device adapted to oscillate from a position with its blank gripping device adjacent to the said rotary member and .in thev path of movement ofthe said projecting portion of the blank held thereby to a position adjacent the said mechanism for acting upon the blank, and means for operating the said rotary member to cause it to move the blank into engagement With the gripping device of the oscillatory arm when the latter is adjacent the said rotary member. 7

2. In a blank feeding device, Vin combination, an oscillatory feed arm provided with a clip, a rocker shaft to one end of which said arm is connected, a reciprocatory rod located near the other end of the shaft., means for reciprocating the rod, and means operatively connecting the rod and shaft to cause reciprocation of the rod t-o rock the shaft, including a disk rigid upon the rod and formed with a slot, and an eccentric pin carried by the shaft and engaging in the said slot.

3. In a blank feeding device, in combination, a frame, an arm provided With means for'holding a blank, meanspivoting the arm `to the frame, means for causing the arm to swing upon its pivot point, and means acting synchronously With such last mentioned means to cause such arm to have revoluble motion imparted thereto, for the purpose set forth.

4. In a blank feeding device, in combination, a frame, an arm provided with means for holding a blank, means pivoting the arm to the frame, means for causing the armto swing upon its pivot point, and means for causing the said arm to revolve upon its own axis.

5. In a blank feeding device, in combination.an oscillatory arm provided with means for holding a blank, means for oscillating the said arm, and means for caus-` ing `the said arm to revolve upon its own axis, including a pair of intermeshing gears mounted one upon the arm and the other upon the machine frame. A

6. In a blank vfeeding device, in combination, a rocker shaft, an oscillatory arm provided vvithmeans for holding a screw blank, and swiveled upon the rocker shaft, a lbevel pinion mounted on the arm, a stationary bevel gear intermeshing with the said pinion, and means for rocking the said shaft, for the purpose set forth.

7. In a blank feeding device, in combination, a rocker shaft, an oscillatory arm provided with means for holding a blank, and swiveled upon the rocker shaft, a bevel pinion mounted on the said arm, a stationary segmental bevel gear intermeshing with the said pinion, and means for rocking the said shaft, for the purpose set forth.

8. Ina blank feeding device, in combination, a rotatable disk formed with recesses adapted to receive a blank, retaining means acting in conjunction with the said recesses, operating mechanism applied to the said disk, an oscillatory arm adapted to receive the blank from the disk, means for oscillating the said arm, andmeans for causing the' said arm to revolve upon its own axis.

In testimony whereof, I have signed my name to this specification, in thc presence of two subscribing witnesses. j

PETER Ii. ROBERTSON.

Witnesses:

II. M. CiIRIs'rMAN, D. S. TovELL. 

